Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5714638 | Preparation of polyoxyalkylene glycol monoether of tert-butyl alcohol and product | Rolf Fischer, Gerhard Jeschek, Herbert Mueller | 1998-02-03 |
| 5659068 | Preparation of polyoxyalkylene glycol monoesters of monocarboxylic acids | Rolf Fischer, Gerhard Jeschek, Herbert Mueller | 1997-08-19 |
| 5561217 | Preparation of polyether glycols | Rolf Fischer, Rolf Pinkos | 1996-10-01 |
| 5536854 | Preparation of 2-methyl-1,4-butanediol and 3-methyltetrahydrofuran | Rolf Fischer, Franz Merger, Juergen Frank, Jochem Henkelmann, Hardo Siegel +1 more | 1996-07-16 |
| 5434273 | Preparation of N-substituted 2-pyrrolidones | Rolf Fischer | 1995-07-18 |
| 5416240 | Preparation of poloxy-alkylene glycols | Rolf Fischer, Gerhard Jeschek, Franz Merger, Herbert Mueller | 1995-05-16 |
| 5414143 | Preparation of polyoxyalkylene glycol monoethers of monohydric alcohols | Rolf Fischer, Gerhard Jeschek, Herbert Mueller | 1995-05-09 |
| 5395959 | Adjustment of the average molecular weight of polyoxyalkylene glycols and polyoxyalkylene derivatives in the heteropolyacid-catalyzed polymerization of cyclic ethers and/or acetals with ring cleavage | Rolf Fischer, Gerhard Jeschek, Herbert Mueller | 1995-03-07 |
| 5391771 | Hydrogenation of citric acid | Rolf Fischer, Christoph Sigwart | 1995-02-21 |
| 5387701 | Preparation of 4-hydroxymethyltetrahydropyran | Rolf Fischer, Werner Schnurr, Norbert Goetz, Thomas Kuekenhoehner | 1995-02-07 |
| 5371242 | Preparation of products of the reduction of 4-hydroxybutyric acid derivatives | Rolf Fischer, Werner Schnurr, Norbert Goetz, Thomas Kuekenhoehner | 1994-12-06 |
| 5276165 | Preparation of N-substituted lactams | Rolf Fischer | 1994-01-04 |
| 5157127 | Preparation of N-substituted pyrrolidones | Rolf Fischer, Wolfgang Harder | 1992-10-20 |
| 5099074 | Process for the preparation of polyether glycols | Herbert Mueller, Gerhard Jeschek, Rolf Fischer | 1992-03-24 |
| 5097077 | Purification of heteropolyacid-containing polyalkylene ether glycols | Herbert Mueller, Gerhard Jeschek, Rolf Fischer | 1992-03-17 |
| 5008408 | Preparation of 1,4-butanediol and tetrahydrofuran | Rolf Fischer, Juergen Frank, Franz Merger | 1991-04-16 |